EXHIBIT 3.2 CERTIFICATE OF AMENDMENT TO THE CERTIFICATE OF LIMITED PARTNERSHIP OF EQUISTAR CHEMICALS, LP Pursuant to the provisions of Section 17-202 of the Delaware Revised Uniform Limited Partnership Act, this Certificate of Amendment to the Certificate of Limited Partnership of Equistar Chemicals, LP (the "Partnership"), is being duly executed and filed by Lyondell Petrochemical G.P. Inc., a Delaware corporation and a general partner of the Partnership and by PDG Chemical Inc., a Delaware corporation and a newly admitted general partner of the Partnership. 1. Name. The name of the limited partnership is Equistar Chemicals, LP. ---- 2. Amendment. The Certificate of Limited Partnership of the Partnership --------- is hereby amended to provide that PDG Chemical Inc. has been admitted as a general partner of the Partnership. The business address of PDG Chemical Inc. is: c/o Occidental Chemical Corporation 5005 LBJ Freeway Dallas, Texas 75244 Attn: Senior Vice President and General Counsel Dated: May 15, 1998 Lyondell Petrochemical G.P. Inc. By: /s/ Dan F. Smith -------------------------------- Name: Dan F. Smith Title: President and Chief Executive Officer PDG Chemical Inc. By: /s/ R.J. Schuh -------------------------------- Name: R.J. Schuh Title: President CERTIFICATE OF AMENDMENT TO THE CERTIFICATE OF LIMITED PARTNERSHIP OF EQUISTAR CHEMICALS, LP Pursuant to the provisions of Section 17-202 of the Delaware Revised Uniform Limited Partnership Act, this Certificate of Amendment to the Certificate of Limited Partnership of Equistar Chemicals, LP (the "Partnership"), is being duly executed and filed by Lyondell Petrochemical G.P. Inc., a Delaware corporation and a general partner of the Partnership and by PDG Chemical Inc., a Delaware corporation and a newly admitted general partner of the Partnership. 1. Name. The name of the limited partnership is Equistar Chemicals, LP. ---- 2. Amendment. The Certificate of Limited Partnership of the Partnership --------- is hereby amended to replace the general partner, PDG Chemical Inc., with Occidental Petrochem Partner GP, Inc. The address of Occidental Petrochem Partner GP, Inc. is: c/o Occidental Chemical Corporation 5005 LBJ Freeway Dallas, Texas 75244 Attn: Senior Vice President and General Counsel Dated: September 14, 1998 Lyondell Petrochemical G.P. Inc. By: /s/ Kerry Galvin -------------------------------- Name: Kerry Galvin Title: Vice President and Secretary Occidental Petrochem Partner GP, Inc. By: /s/ Linda S. Peterson -------------------------------- Name: Linda S. Peterson Title: Assistant Secretary